Air blast gin



Oct. 29,1940.

A. B. SANDERS AIR BLAST GIN Filed May 24, 1 940 Patented Oct. 29, 1940 YUNITED STATES- AIR BLAST GIN Amis B. Sanders, Pulaski, Tenn., assigner of onefourth to Thomas B. Carter and one-fourth to G. B. Abernathy, Pulaski, Tenn.

Application May 24; 1940, serial No. 337,103

4 Claims.

fectly clean, but this has not been satisfactorily accomplished, and I have invented means for r producing entirely satisfactory results, with re spect 'to keeping the saws and their teeth clean, and highly efcient at all times.

Another object of this invention is the provision of novel means within the periphery of each gin saw, whereby compressed air'will be directed outwardly to the periphery of each saw, resulting in the matter, such as lint or freshly ginned cotton fiber being lifted off the saw and its teeth, leaving a perfectly clean surface in every instance.

A still further object of the invention is the provision of simple and novel means for discharging air under high pressure from within the periphery of the gin saw, thereby blowing with a positive action the accumulation on the teeth, whereby the teeth and saw body will al- Ways be kept perfectly clean, and free from any accumulation whatsoever.

With the foregoing and other objects in view, the invention comprises certain novel constructions, combinations, and arrangements of parts as will be hereinafter fully described, illustrated in the accompanying drawing, and more particularly pointed out in the appended claims.

In the drawing:

Figure 1 is a view in side elevation of a portion of a standard gin, showing in vertical section my invention applied thereto.

Figure 2 is a horizontal sectional view taken 45 on line 2 2, Figure 1, and looking in the direction of the arrows.

Figure 3 is a horizontal sectional view taken on line 3 3, Figure 1, and looking in the direction of the arrows.

Figure 4 is a vertical sectional view taken on line 4 4, Figure 1, and looking in the direction of the arrows.

Figure 5 is an enlarged fragmentary sectional view of the hollow rib, lint flue and gin saw.

Referring to the drawing, in which I have shown the preferred embodiment of my invention, I designates a standard gin casing or frame. Within the frame I is the usual roll box 2 into which extends part of thegin saws 3. The ordinary ribs 4 are placed contiguous to the gin saws 6 `3, as well as my improved hollow ribs 5. Each hollow rib 5 is provided in its upper end with an air passage 6 that communicates through aperture 1 with the interior of the hollow top rib rail 8. This hollow rib rail 8 extends across the 10 top of the frame I.

A main air supply pipe or conduit 9 is connected to an air pump or compressor, whereby air issupplied to pipe 9 under high compression. A branch pipe I0 leads from pipe 9- and opens l5 into the hollow rib rail at II, Fig. 1. Therefore, it will be seen that air under high pressure is supplied to the passage 6 of the hollowv rib v5. An outlet port I2 (Fig. 5) is formed on the inner portion of hollow rib 5, and is at an angle for 20 directing air (indicated by arrows A, Fig. 5), against the saw teeth I3, whereby thel freshly ginned cotton fibre, is lifted entirely off the teeth, leaving said teeth clean at all times. It is to be noted that the air A is not blown down 26 outside of the periphery of the gin saw, as is the common method in the art, prior to this invention; with the old way, the saw is not kept perfectly clean, as the old tangent way of forcing the air against the saw teeth does not pro- 30 duce satisfactory results.

The cotton fiber or lint from each saw is delivered into the lint ue I4, and then is discharged into the lint off-take flue or duct I5, which leads to a condenser, or the like.

It is to be understood that the gin saws 3 are supported in any common manner upon the frame I.

As a result of my invention cotton can be ginned irrespective as to its condition, that is, 40 whether it is exceedingly moist or damp or dry. Thatis because my invention will always keep the saws perfectly clean, and the air can be of kany desired temperature, together with its velocity, which insures not only perfectly clean 4,5 saws, but also that the cotton lint or liber will be dry, and placed in satisfactory condition for handling, as the operator desires.

A great many advantages result from my invention, among which may be mentioned that the 50 gin, and particularly the saws and their cooperative parts, are kept from gumming and choking; the invention eliminates considerable equipment of the old gin, as well as greatly reduces power requirements. My improved structure dries the 55 lint after ginning instead of beforev ginning, thereby eliminating the drying machinery entirely that has heretofore been used. It also prevents damage to seed caused by the old method of heating and drying the cotton prior to passing through the gin. It allows any ldesired pressure of air to be used on the saws and their teeth, also, by allowing the operator to use air of any desired temperature, it improves the sample of quality of the cotton. It restores normal moisture, thereby preventing static dangers. Many other advantages could be assigned for my invention.

It is also to be noted that by discharging the air at a high pressure from within the periphery of each saw that the cotton fiber or lint is blown off the teeth in substantially a horizontal plane, and directly into the lint flue in a most elflcient manner, and not downward toward the bottom of the machine as is common in the prior art. This process of discharging the air simplies the construction of the lint flue, allowing it to be eiiiciently connected to the take-01T flue l5.

While I have described the preferred embodiment of my invention and illustrated the same in the accompanying drawing, certain changes or alterations may appear to one skilled in the art to which this invention relates during the extensive manufacture of the same, and I, therefore, reserve the right to make such changes or alterations as shall fairly fall within the scope of the appended claims.

Upon referring to Figure 2, it will be clearly seen that each lint flue I4 is bifurcated at its inner end, and that a gin saw is within the bifurcation. Further, that the hollow ribs 5 are at the inner ends of the bifurcation; that is, each lint flue has two hollow ribs 5 at its inner end, with the air under high pressure discharging longitudinally of each tooth and longitudinally of the lint flue (Fig. l).

This invention is just as adaptable to linters as to cotton gins.

What I claim is:

1. In a machine of the class described, the combination with a frame, of a gin saw within said frame, a hollow rib rail at the top of said frame, a hollow rib depending from and in communication with said hollow rib rail, said hollow rib having its outer end within the periphery of said gin saw, and said hollow rib provided with an outlet port near its outer end and within the periphery of said gin saw.

2. In a machine of the class described, the combination with a frame, a gin saw within said frame, of a hollow top rail extending across said frame, a plurality of hollow ribs contiguous to said gin saw and having their upper ends opening into said hollow top rail, each hollow rib having a central channel and an outlet port formed on the inner portion of said rib, and each outlet port extending outwardly, whereby air will be directed against the teeth of said gin saw in substantially in horizontal plane and parallel with the longitudinal axis of said teeth, substantially as shown and described.

3. In a machine of the class described, the combination with a frame, of a gin saw mounted within said frame, a lint flue contiguous to said gin saw and partly surrounding a portion thereof, a hollow rib against the inner end of said lint l nue, and said hollow rib provided with means within the periphery of said gin saw for blowing l matter o said gin saw and longitudinally of said lint flue.

e. In a machine of the class described, the cornbination with a frame, of a rotatable gin saw within said frame, a rib depending from the top l portion of said frame and having its outer end Within the periphery of said gin saw, means for supplying air to said rib, and said `rib provided with means for discharging air under high pressure outwardly and substantially parallel with the longitudinal axis of each tooth as it registers with said vdischarging means.

AMIS B. SANDERS. 

